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</style><div style="font-family:times new roman,new york,times,serif;font-size:12pt">Steve didn't forget anything -- he caused the iPad to be redeveloped and put out as a product (that was what I was referring to).<br><br>It's not just small type -- it's small page size, not enough pixels for great antialiasing, and also trade-offs between visual angles due to the conflict of sampling between two discrete mechanisms (display and retina).<br><br>And visual angle is also very important younger ages, and for drag and drop construction, visible resources, etc. For example, the excellent Scratch interface is not nearly as effective on the XO despite the large number of pixels.<br><br>I'm not putting out unsupported or internally generated random opinions here. (And I would be very leery of "educational" research in general. They are trying to look for the lost keys under the lamp post
rather in the inconvenient dark down the street where they were lost.)<br><br>For example, it is still that case that the better reader you are, the harder it is to read on any computer screen, still today, and even the ones that don't flicker at all. We put a lot of effort at Xerox PARC to do the experiments and observations to understand what it takes to make readable electronic media (among other things, I was the original type designer and tester there for both bit-map screens and the early laser printers). One part of the story can be found in Tom Cornsweet's book on the modulation transfer function of human vision as related to stable reflective media. Another has to do with the tradeoffs between visual acuity, light sensitivity, saccades, scanning, and several other factors in the way human vision works.<br><br>I don't think anyone would accuse me of having tried to reinvent the wheel, or admonish me to try not to (but the range of random opinion
out there is wide indeed). <br><br>However, I am worried that the big propensity today is that so many people in both computing and education are "reinventing the flat tire".<br><br>Cheers,<br><br>Alan<br><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><br><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><font size="2" face="Tahoma"><hr size="1"><b><span style="font-weight:bold">From:</span></b> Caryl Bigenho &lt;cbigenho@hotmail.com&gt;<br><b><span style="font-weight:bold">To:</span></b> Alan Kay &lt;alan.nemo@yahoo.com&gt;; Bert Freudenberg &lt;bert@freudenbergs.de&gt;; IAEP SugarLabs &lt;iaep@lists.sugarlabs.org&gt;<br><b><span style="font-weight:bold">Sent:</span></b> Sat, June 12, 2010 5:12:43 PM<br><b><span style="font-weight:bold">Subject:</span></b> RE: [IAEP] Apple Eases Restrictions On iPhone Developers<br></font><br>